Good video mate,
Garry999 the heating of the metal to fit the brush was Jouk's Idea I believe,
I used the same method as the video only I used a 6" section of the Unger no 1 section instead of the broom. I drilled a 6mm hole through the top, making it identical to the unger pole, it will now take any unger attachments, including the brilliant aluminium threaded end piece from Cleantech.
If the clamps start to slip, and they do eventually, just cut a centimeter wide strip from a plastic pop bottle, wrap this round the plastic claws, tucking each end into the space between them.
Presto they're as good as new.